Data drill-down library/canvas/tool

I am looking for some visualisation canvas that would allow easy visualisation of ma开发者_如何学运维ny nodes and edges as well as drill-down and exploration. Closest to what I want was Gephi.

You might take a look at yEd, which is very similar to Gephi. One thing that I prefer in yEd is the multi-pane layout, so you can view the zoomed out graph for overall orienation, the large view at the current zoom level, and a third perspective - a block and arrow diagram of the current node and it's adjacencies.